National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

Marshalltown, Marshalltown Municipal Airport (KMIW)

Lat: 42.11°NLon: 92.92°WElev: 971ft.

Fair

27°F

-3°C

Humidity 72%
Wind Speed SW 9 mph
Barometer 30.17 in (1022.7 mb)
Dewpoint 19°F (-7°C)
Visibility 10.00 mi
Wind Chill18°F (-8°C)
Last update 12 Jan 12:53 am CST
Extended Forecast for

Grundy Center IA

  • Overnight

    Overnight: Mostly cloudy, with a low around 26. West southwest wind 7 to 11 mph, with gusts as high as 20 mph.

    Low: 26 °F

    Mostly Cloudy

  • Monday

    Monday: Mostly cloudy through mid morning, then gradual clearing, with a high near 43. West wind 6 to 8 mph.

    High: 43 °F

    Becoming
    Sunny

  • Monday Night

    Monday Night: Increasing clouds, with a low around 33. West southwest wind 8 to 15 mph, with gusts as high as 21 mph.

    Low: 33 °F

    Increasing
    Clouds

  • Tuesday

    Tuesday: Mostly sunny, with a high near 47. Breezy, with a west wind 16 to 20 mph, with gusts as high as 28 mph.

    High: 47 °F

    Mostly Sunny
    and Breezy

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 24. Windy, with a northwest wind 17 to 22 mph increasing to 23 to 28 mph after midnight. Winds could gust as high as 34 mph.

    Low: 24 °F

    Mostly Cloudy
    and Windy

  • Wednesday

    Wednesday: Partly sunny, with a high near 28. Windy.

    High: 28 °F

    Partly Sunny
    and Windy

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 13. Blustery.

    Low: 13 °F

    Mostly Clear
    and Blustery
    then Mostly
    Clear

  • Thursday

    Thursday: A 20 percent chance of snow after noon. Partly sunny, with a high near 29.

    High: 29 °F

    Partly Sunny
    then Slight
    Chance Snow

  • Thursday Night

    Thursday Night: A 40 percent chance of snow. Mostly cloudy, with a low around 24.

    Low: 24 °F

    Chance Snow

Detailed Forecast

Overnight
Mostly cloudy, with a low around 26. West southwest wind 7 to 11 mph, with gusts as high as 20 mph.
Monday
Mostly cloudy through mid morning, then gradual clearing, with a high near 43. West wind 6 to 8 mph.
Monday Night
Increasing clouds, with a low around 33. West southwest wind 8 to 15 mph, with gusts as high as 21 mph.
Tuesday
Mostly sunny, with a high near 47. Breezy, with a west wind 16 to 20 mph, with gusts as high as 28 mph.
Tuesday Night
Mostly cloudy, with a low around 24. Windy, with a northwest wind 17 to 22 mph increasing to 23 to 28 mph after midnight. Winds could gust as high as 34 mph.
Wednesday
Partly sunny, with a high near 28. Windy.
Wednesday Night
Mostly clear, with a low around 13. Blustery.
Thursday
A 20 percent chance of snow after noon. Partly sunny, with a high near 29.
Thursday Night
A 40 percent chance of snow. Mostly cloudy, with a low around 24.
Friday
A 50 percent chance of snow. Mostly cloudy, with a high near 33. Breezy.
Friday Night
Mostly cloudy, with a low around 11. Blustery.
Saturday
Partly sunny, with a high near 18. Blustery.
Saturday Night
Partly cloudy, with a low around 7.
Sunday
Partly sunny, with a high near 24. Breezy.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Grundy Center IA
 42.36°N 92.79°W
Last Update:
10:51 pm CST Jan 11, 2026
Forecast Valid:
1am CST Jan 12, 2026-6pm CST Jan 18, 2026
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation